2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
\r
4 * This file is part of CasparCG (www.casparcg.com).
\r
6 * CasparCG is free software: you can redistribute it and/or modify
\r
7 * it under the terms of the GNU General Public License as published by
\r
8 * the Free Software Foundation, either version 3 of the License, or
\r
9 * (at your option) any later version.
\r
11 * CasparCG is distributed in the hope that it will be useful,
\r
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
\r
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
\r
14 * GNU General Public License for more details.
\r
16 * You should have received a copy of the GNU General Public License
\r
17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
\r
19 * Author: Robert Nagy, ronag89@gmail.com
\r
22 #include "../../stdafx.h"
\r
24 #include "channel_producer.h"
\r
26 #include "../../consumer/frame_consumer.h"
\r
27 #include "../../consumer/output.h"
\r
28 #include "../../video_channel.h"
\r
30 #include "../frame/basic_frame.h"
\r
31 #include "../frame/frame_factory.h"
\r
32 #include "../../mixer/write_frame.h"
\r
33 #include "../../mixer/read_frame.h"
\r
35 #include <common/exception/exceptions.h>
\r
36 #include <common/memory/memcpy.h>
\r
37 #include <common/concurrency/future_util.h>
\r\r
38 #include <tbb/concurrent_queue.h>
\r
40 namespace caspar { namespace core {
\r
42 class channel_consumer : public frame_consumer
\r
44 tbb::concurrent_bounded_queue<std::shared_ptr<read_frame>> frame_buffer_;
\r
45 core::video_format_desc format_desc_;
\r
47 tbb::atomic<bool> is_running_;
\r
53 frame_buffer_.set_capacity(3);
\r
63 virtual boost::unique_future<bool> send(const safe_ptr<read_frame>& frame) override
\r
65 frame_buffer_.try_push(frame);
\r
66 return caspar::wrap_as_future(is_running_.load());
\r
69 virtual void initialize(const core::video_format_desc& format_desc, int channel_index) override
\r
71 format_desc_ = format_desc;
\r
72 channel_index_ = channel_index;
\r
75 virtual std::wstring print() const override
\r
77 return L"[channel-consumer|" + boost::lexical_cast<std::wstring>(channel_index_) + L"]";
\r
80 virtual boost::property_tree::wptree info() const override
\r
82 boost::property_tree::wptree info;
\r
83 info.add(L"type", L"channel-consumer");
\r
84 info.add(L"channel-index", channel_index_);
\r
88 virtual bool has_synchronization_clock() const override
\r
93 virtual size_t buffer_depth() const override
\r
98 virtual int index() const override
\r
100 return 78500 + channel_index_;
\r
103 // channel_consumer
\r
107 is_running_ = false;
\r
108 frame_buffer_.try_push(make_safe<read_frame>());
\r
111 const core::video_format_desc& get_video_format_desc()
\r
113 return format_desc_;
\r
116 std::shared_ptr<read_frame> receive()
\r
119 return make_safe<read_frame>();
\r
120 std::shared_ptr<read_frame> frame;
\r
121 frame_buffer_.try_pop(frame);
\r
126 class channel_producer : public frame_producer
\r
128 const safe_ptr<frame_factory> frame_factory_;
\r
129 const safe_ptr<channel_consumer> consumer_;
\r
131 std::queue<safe_ptr<basic_frame>> frame_buffer_;
\r
132 safe_ptr<basic_frame> last_frame_;
\r
133 uint64_t frame_number_;
\r
136 explicit channel_producer(const safe_ptr<frame_factory>& frame_factory, const safe_ptr<video_channel>& channel)
\r
137 : frame_factory_(frame_factory)
\r
138 , consumer_(make_safe<channel_consumer>())
\r
139 , last_frame_(basic_frame::empty())
\r
142 channel->output()->add(consumer_);
\r
143 CASPAR_LOG(info) << print() << L" Initialized";
\r
146 ~channel_producer()
\r
149 CASPAR_LOG(info) << print() << L" Uninitialized";
\r
154 virtual safe_ptr<basic_frame> receive(int) override
\r
156 auto format_desc = consumer_->get_video_format_desc();
\r
158 if(frame_buffer_.size() > 1)
\r
160 auto frame = frame_buffer_.front();
\r
161 frame_buffer_.pop();
\r
162 return last_frame_ = frame;
\r
165 auto read_frame = consumer_->receive();
\r
166 if(!read_frame || read_frame->image_data().empty())
\r
167 return basic_frame::late();
\r
171 core::pixel_format_desc desc;
\r
172 bool double_speed = std::abs(frame_factory_->get_video_format_desc().fps / 2.0 - format_desc.fps) < 0.01;
\r
173 bool half_speed = std::abs(format_desc.fps / 2.0 - frame_factory_->get_video_format_desc().fps) < 0.01;
\r
175 if(half_speed && frame_number_ % 2 == 0) // Skip frame
\r
178 desc.pix_fmt = core::pixel_format::bgra;
\r
179 desc.planes.push_back(core::pixel_format_desc::plane(format_desc.width, format_desc.height, 4));
\r
180 auto frame = frame_factory_->create_frame(this, desc);
\r
182 fast_memcpy(frame->image_data().begin(), read_frame->image_data().begin(), read_frame->image_data().size());
\r
185 frame_buffer_.push(frame);
\r
188 frame_buffer_.push(frame);
\r
193 virtual safe_ptr<basic_frame> last_frame() const override
\r
195 return last_frame_;
\r
198 virtual std::wstring print() const override
\r
200 return L"channel[]";
\r
203 virtual boost::property_tree::wptree info() const override
\r
205 boost::property_tree::wptree info;
\r
206 info.add(L"type", L"channel-producer");
\r
211 safe_ptr<frame_producer> create_channel_producer(const safe_ptr<core::frame_factory>& frame_factory, const safe_ptr<video_channel>& channel)
\r
213 return create_producer_print_proxy(
\r
214 make_safe<channel_producer>(frame_factory, channel));
\r